Persistent Link:
http://hdl.handle.net/10150/620861
Title:
Exotic Higgs Decays
Author:
Kling, Felix
Issue Date:
2016
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Many models of physics beyond the Standard Model include an extended Higgs sector, responsible for electroweak symmetry breaking, and predict the existence of additional Higgs bosons. The Type II Two-Higgs-Doublet Model (2HDM) is a particularly well motivated scenario and a suitable framework for phenomenological studies of extended Higgs sectors. Its low energy spectrum includes two CP-even Higgses h and H, one CP-odd Higgs A, and a pair of charged Higgses H±. We study the implication of the LHC Higgs search results on the Type II 2HDM and identify regions of parameter space which are consistent with all experimental and theoretical constraints and can accommodate the observed 125 GeV Higgs signal. This includes parameter space with a distinctive mass hierarchy which permit a sizable mass splitting between the undiscovered non-Standard Model Higgs states. If this mass splitting is large enough, exotic Higgs decay channels into either a Higgs plus a Standard Model gauge boson or two lighter Higgses open up. This can significantly weaken the reach of the conventional Higgs decay channels into Standard Model particles but also provide the additional opportunity to search for exotic Higgs decay channels. We provide benchmark planes to explore exotic Higgs decay scenarios and perform detailed collider analyses to study the exotic decay channels H/A -> AZ/HZ and H± -> AW/HW. We find that these exotic decays offer complementary discovery channels to the conventional modes for both neutral and charged Higgs searches and permit exclusion and discovery in large regions of parameter space.
Type:
text; Electronic Dissertation
Keywords:
High Energy Physics; Particle Physics; Physics; Higgs
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Graduate College; Physics
Degree Grantor:
University of Arizona
Advisor:
Su, Shufang

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleExotic Higgs Decaysen_US
dc.creatorKling, Felixen
dc.contributor.authorKling, Felixen
dc.date.issued2016-
dc.publisherThe University of Arizona.en
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en
dc.description.abstractMany models of physics beyond the Standard Model include an extended Higgs sector, responsible for electroweak symmetry breaking, and predict the existence of additional Higgs bosons. The Type II Two-Higgs-Doublet Model (2HDM) is a particularly well motivated scenario and a suitable framework for phenomenological studies of extended Higgs sectors. Its low energy spectrum includes two CP-even Higgses h and H, one CP-odd Higgs A, and a pair of charged Higgses H±. We study the implication of the LHC Higgs search results on the Type II 2HDM and identify regions of parameter space which are consistent with all experimental and theoretical constraints and can accommodate the observed 125 GeV Higgs signal. This includes parameter space with a distinctive mass hierarchy which permit a sizable mass splitting between the undiscovered non-Standard Model Higgs states. If this mass splitting is large enough, exotic Higgs decay channels into either a Higgs plus a Standard Model gauge boson or two lighter Higgses open up. This can significantly weaken the reach of the conventional Higgs decay channels into Standard Model particles but also provide the additional opportunity to search for exotic Higgs decay channels. We provide benchmark planes to explore exotic Higgs decay scenarios and perform detailed collider analyses to study the exotic decay channels H/A -> AZ/HZ and H± -> AW/HW. We find that these exotic decays offer complementary discovery channels to the conventional modes for both neutral and charged Higgs searches and permit exclusion and discovery in large regions of parameter space.en
dc.typetexten
dc.typeElectronic Dissertationen
dc.subjectHigh Energy Physicsen
dc.subjectParticle Physicsen
dc.subjectPhysicsen
dc.subjectHiggsen
thesis.degree.namePh.D.en
thesis.degree.leveldoctoralen
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorUniversity of Arizonaen
dc.contributor.advisorSu, Shufangen
dc.contributor.committeememberToussaint, William D.en
dc.contributor.committeememberJohns, Kenneth A.en
dc.contributor.committeememberManne, Srinivasen
dc.contributor.committeememberFleming, Sean P.en
dc.contributor.committeememberSu, Shufangen
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